SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Schedule 13G

INFORMATION TO BE INCLUDED IN STATEMENTS PURSUANT TO RULES 13d-1(b),(c)
AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2
UNDER THE SECURITIES EXCHANGE ACT OF 1934*

Jianpu Technology Inc.
(Name of Issuer)

Class A ordinary shares, US$0.0001 par value per share
(traded in the form of American depositary shares,
each two representing five Class A ordinary shares)
(Title of Class of Securities)

47738D101
(CUSIP Number)

November 20, 2017
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
[ ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[ ] Rule 13d-1(d)


* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


Schedule 13G PAGE 2 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Global Investors LP
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    6,622,788
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    6,622,788
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          6,622,788
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          9.6%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          PN
_____________________________________________________________________________


Schedule 13G PAGE 3 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Global Performance LLC
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    4,602,353
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    4,602,353
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          4,602,353
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          6.7%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          OO
_____________________________________________________________________________


Schedule 13G PAGE 4 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Global Equities LP
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    1,569,403
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    1,569,403
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          1,569,403
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          2.3%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          PN
_____________________________________________________________________________


Schedule 13G PAGE 5 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Global Equities II LP
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    92,048
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    92,048
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          92,048
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          0.1%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          PN
_____________________________________________________________________________


Schedule 13G PAGE 6 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          VGE III Portfolio Ltd.
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Cayman Islands
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,940,903
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    2,940,903
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          2,940,903
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          4.3%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          CO
_____________________________________________________________________________


Schedule 13G PAGE 7 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Long Fund GP LLC
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,020,435
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    2,020,435
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          2,020,435
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          2.9%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          OO
_____________________________________________________________________________


Schedule 13G PAGE 8 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Viking Long Fund Master Ltd.
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Cayman Islands
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,020,435
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    2,020,435
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          2,020,435
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          2.9%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          CO
_____________________________________________________________________________


Schedule 13G PAGE 9 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          O. Andreas Halvorsen
_____________________________________________________________________________
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________
     (3)  SEC USE ONLY

_____________________________________________________________________________
     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          Norway
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    6,622,788
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    6,622,788
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          6,622,788
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          9.6%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          IN
_____________________________________________________________________________


Schedule 13G PAGE 10 of 18

CUSIP No. 47738D101
_____________________________________________________________________________

     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          David C. Ott
_____________________________________________________________________________

     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________

     (3)  SEC USE ONLY
_____________________________________________________________________________

     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          United States
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    6,622,788
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    6,622,788
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          6,622,788
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          9.6%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          IN
_____________________________________________________________________________


Schedule 13G PAGE 11 of 18

CUSIP No. 47738D101
_____________________________________________________________________________
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
          Rose S. Shabet
_____________________________________________________________________________

     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                    (a)  [ ]
                                                                    (b)  [x]
_____________________________________________________________________________

     (3)  SEC USE ONLY
_____________________________________________________________________________

     (4)  CITIZENSHIP OR PLACE OF ORGANIZATION
          United States
_____________________________________________________________________________

NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         ______________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    6,622,788
OWNED BY       ______________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      ______________________________________________________________

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                    6,622,788
_____________________________________________________________________________
     (9)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
          6,622,788
_____________________________________________________________________________
    (10)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (9) EXCLUDES CERTAIN SHARES                             [ ]
_____________________________________________________________________________
    (11)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (9)
          9.6%
_____________________________________________________________________________
    (12)  TYPE OF REPORTING PERSON
          IN
_____________________________________________________________________________


Schedule 13G PAGE 12 of 18

CUSIP No. 47738D101

ITEM 1(a).  NAME OF ISSUER:
            Jianpu Technology Inc.

ITEM 1(b).  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
            21/F Internet Finance Center
            Danling Street, Beijing
            People's Republic of China

ITEM 2(a).  NAME OF PERSON FILING:
            Viking Global Investors LP ("VGI"),
            Viking Global Performance LLC ("VGP"),
            Viking Global Equities LP ("VGE"),
            Viking Global Equities II LP ("VGEII"),
            VGE III Portfolio Ltd. ("VGEIII"),
            Viking Long Fund GP LLC ("VLFGP"),
            Viking Long Fund Master Ltd. ("VLFM"),
            O. Andreas Halvorsen, David C. Ott and
            Rose S. Shabet (collectively, the "Reporting Persons")

ITEM 2(b).  ADDRESS OF PRINCIPAL OFFICE OR, IF NONE, RESIDENCE:
            The business address of each of the Reporting Persons is
            55 Railroad Avenue, Greenwich, Connecticut  06830.

ITEM 2(c).  CITIZENSHIP:
            VGI, VGE and VGEII are Delaware limited partnerships;
            VGEIII and VLFM are Cayman Islands exempted companies; and
            VGP and VLFGP are Delaware limited liability companies.
            O. Andreas Halvorsen is a citizen of Norway.
            David C. Ott and Rose S. Shabet are citizens of
            the United States.

ITEM 2(d).  TITLE OF CLASS OF SECURITIES:
            Class A ordinary shares, US$0.0001 par value per share
            (traded in the form of American depositary shares,
            each two representing five Class A ordinary shares) ("Common Stock")

ITEM 2(e).  CUSIP NUMBER:  47738D101

ITEM 3.     IF THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) OR 13d-2(b) OR (c),
            CHECK WHETHER THE PERSON FILING IS A:

          (a) [ ]   Broker or dealer registered under Section 15 of the
                    Act

          (b) [ ]   Bank as defined in Section 3(a)(6) of the Act

          (c) [ ]   Insurance Company as defined in Section 3(a)(19) of
                    the Act

          (d) [ ]   Investment Company registered under Section 8 of the
                    Investment Company Act of 1940

          (e) [ ]   Investment Adviser registered under Section 203 of the
                    Investment Advisers Act of 1940: see Rule 13d-
                    1(b)(1)(ii)(E)

          (f) [ ]   Employee Benefit Plan, Pension Fund which is subject
                    to the provisions of the Employee Retirement Income
                    Security Act of 1974 or Endowment Fund; see Rule 13d-
                    1(b)(1)(ii)(F)


Schedule 13G PAGE 13 of 18

CUSIP No. 47738D101

          (g) [ ]   Parent Holding Company, in accordance with Rule 13d-
                    1(b)(ii)(G)

          (h) [ ]   Savings Associations as defined in Section 3(b) of the
                    Federal Deposit Insurance Act

          (i) [ ]   Church Plan that is excluded from the definition of an
                    investment company under Section 3(c)(14) of the
                    Investment Company Act of 1940

          (j) [ ]   A non-U.S. institution in accordance with
                    Rule 240.13d-1(b)(1)(ii)(J)

          (k) [ ]   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
                    If filing as a non-U.S. institution in accordance with
                    Rule 240.13d-1(b)(1)(ii)(J), please specify
                    the type of institution:

ITEM 4.   OWNERSHIP.

     A.  VGI
          (a)  Amount beneficially owned: 6,622,788
          (b)  Percent of class: 9.6%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         6,622,788
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 6,622,788

                  VGI provides managerial services to VGE, VGEII, VGEIII and VLFM.
                  VGI has the authority to dispose of and vote the shares
                  of Common Stock.

                  Based on Rule 13d-3 of the Securities Exchange Act of 1934,
                  as amended (the "Act"), VGI may be deemed to beneficially
                  own the shares of Common Stock directly held by VGE, VGEII,
                  VGEIII and VLFM. VGI does not directly own
                  any shares of Common Stock.


Schedule 13G PAGE 14 of 18

CUSIP No. 47738D101

     B.  VGP
          (a)  Amount beneficially owned: 4,602,353
          (b)  Percent of class: 6.7%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         4,602,353
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 4,602,353

                  VGP, as the general partner of VGE and VGEII, has the
                  authority to dispose of and vote the shares of Common Stock
                  directly owned by VGE and VGEII.  VGP serves as investment
                  manager to VGEIII and has the authority to dispose of and vote
                  the shares of Common Stock directly owned by VGEIII.  VGP does
                  not directly own any shares of Common Stock.

                  Based on Rule 13d-3 of the Act, VGP may be deemed to
                  beneficially own the shares of Common Stock directly held by
                  VGE, VGEII and VGEIII.

     C.  VLFGP
          (a)  Amount beneficially owned: 2,020,435
          (b)  Percent of class: 2.9%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         2,020,435
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 2,020,435

                  VLFGP serves as the investment manager of VLFM and has the
                  authority to dispose of and vote the shares of Common Stock
                  directly owned by VLFM.  VLFGP does not directly own
                  any shares of Common Stock.

                  Based on Rule 13d-3 of the Act, VLFGP may be deemed to
                  beneficially own the shares of Common Stock directly held by
                  VLFM.


Schedule 13G PAGE 15 of 18

CUSIP No. 47738D101

      D.  VGE
          (a)  Amount beneficially owned: 1,569,403
          (b)  Percent of class: 2.3%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         1,569,403
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 1,569,403

                   VGE has the authority to dispose of and vote the shares
                   of Common Stock directly owned by it, which power may be
                   exercised by its general partner, VGP, and by VGI, an
                   affiliate of VGP, which provides managerial services to VGE.

      E.  VGEII
          (a)  Amount beneficially owned: 92,048
          (b)  Percent of class: 0.1%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         92,048
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 92,048

                   VGEII has the authority to dispose of and vote the shares
                   of Common Stock directly owned by it, which power may be
                   exercised by its general partner, VGP, and by VGI, an
                   affiliate of VGP, which provides managerial services to VGEII.

      F.  VGEIII
          (a)  Amount beneficially owned: 2,940,903
          (b)  Percent of class: 4.3%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         2,940,903
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 2,940,903

                   VGEIII has the authority to dispose of and vote the shares
                   of Common Stock directly owned by it, which power may be
                   exercised by its investment manager, VGP, and by VGI, an
                   affiliate of VGP, which provides managerial services to VGEIII.
                   Viking Global Equities III Ltd. (a Cayman Islands exempted
                   company) invests substantially all of its assets through VGEIII.

      G.  VLFM
          (a)  Amount beneficially owned: 2,020,435
          (b)  Percent of class: 2.9%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         2,020,435
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 2,020,435

                   VLFM has the authority to dispose of and vote the
                   shares of Common Stock directly owned by it, which power may
                   be exercised by its investment manager, VLFGP, and by VGI,
                   an affiliate of VLFGP, which provides managerial services
                   to VLFM. Viking Long Fund LP (a Delaware limited partnership)
                   and Viking Long Fund III Ltd. (a Cayman Islands exempted
                   company), through its investment in Viking Long Fund Intermediate
                   LP (a Cayman Islands limited partnership), invest substantially
                   all of their assets through VLFM.


Schedule 13G PAGE 16 of 18

CUSIP No. 47738D101

       H.  O. Andreas Halvorsen, David C. Ott and Rose S. Shabet
          (a)  Amount beneficially owned: 6,622,788
          (b)  Percent of class: 9.6%
          (c)  Number of shares as to which such person has:
                  (i)    sole power to vote or to direct the vote
                         0
                  (ii)   shared power to vote or to direct the vote
                         6,622,788
                  (iii)  sole power to dispose or to direct the disposition
                         of 0
                  (iv)   shared power to dispose or to direct the disposition
                         of 6,622,788

                  Mr. Halvorsen, Mr. Ott and Ms. Shabet, as
                  Executive Committee Members of Viking Global Partners LLC,
                  general partner of VGI ("VGPL"), VGP and VLFGP,
                  have shared authority to dispose of and vote the shares of
                  Common Stock beneficially owned by VGI, VGP and VLFGP.
                  None of Mr. Halvorsen, Mr. Ott and Ms. Shabet directly
                  owns any shares of Common Stock.

                  Based on Rule 13d-3 of the Act, each may be deemed to beneficially
                  own the shares of Common Stock directly held by VGE, VGE II,
                  VGEIII and VLFM.

          The Reporting Persons' holdings consist of American depositary shares,
          each two of which represent five shares of Common Stock.

ITEM 5.   OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
          If this statement is being filed to report the fact that as of the
          date hereof the Reporting Persons has ceased to be the beneficial
          owner of more than five percent of the class of securities,
          check the following.[]

ITEM 6.   OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
          Yes, see Item 4.

ITEM 7.   IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
          THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.
          Not applicable.

ITEM 8.   IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
          Not applicable.

ITEM 9.   NOTICE OF DISSOLUTION OF GROUP.
          Not applicable.

ITEM 10.  CERTIFICATION.  (if filing pursuant to Rule 13d-1(c))
          By signing below each Reporting Person certifies that, to the best
          of its knowledge and belief, the securities referred to above were not
          acquired and are not held for the purpose of or with the effect of
          changing or influencing the control of the issuer of the securities
          and were not acquired and not held in connection with or as a
          participant in any transaction having that purpose or effect.


Schedule 13G PAGE 17 of 18

CUSIP No. 47738D101

SIGNATURES

      After reasonable inquiry and to the best of our knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct.

DATED: November 30, 2017

                        /s/ O. ANDREAS HALVORSEN
                        By: O. Andreas Halvorsen - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.

                        /s/ DAVID C. OTT
                        By: David C. Ott - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.

                        /s/ ROSE S. SHABET
                        By: Rose S. Shabet - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.


Schedule 13G PAGE 18 of 18

CUSIP No. 47738D101

EXHIBIT A - JOINT FILING AGREEMENT

        This joint filing agreement is made and entered into as of
this 30th day of November, 2017, by and among Viking Global Investors LP,
Viking Global Performance LLC, Viking Global Equities LP, Viking Global
Equities II LP, VGE III Portfolio Ltd., Viking Long Fund GP LLC, Viking Long
Fund Master Ltd., O. Andreas Halvorsen, David C. Ott and Rose S. Shabet.

        The parties hereby agree to jointly prepare and file a Schedule 13G
with respect to Jianpu Technology Inc., as well as any amendments thereto,
pursuant to the Securities Exchange Act of 1934, as amended.

        IN WITNESS WHEREOF, the parties hereto have executed this agreement
as of the date first set forth above.

Dated: November 30, 2017

                        /s/ O. ANDREAS HALVORSEN
                        By: O. Andreas Halvorsen - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.

                        /s/ DAVID C. OTT
                        By: David C. Ott - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.

                        /s/ ROSE S. SHABET
                        By: Rose S. Shabet - individually and
                        as an Executive Committee Member of
                        VIKING GLOBAL PERFORMANCE LLC, on behalf
                        of itself and VIKING GLOBAL EQUITIES LP,
                        VIKING GLOBAL EQUITIES II LP and VGE III PORTFOLIO LTD.,
                        and as an Executive Committee Member of
                        Viking Global Partners LLC, on behalf of
                        VIKING GLOBAL INVESTORS LP, and as
                        an Executive Committee Member of
                        VIKING LONG FUND GP LLC, on behalf of itself
                        and VIKING LONG FUND MASTER LTD.

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